[wù chā]
error
mean error; average error
平均误差
instrumental error
仪器误差
probable error
概然误差
the error of a planet
行星观测上位置与计算上位置间的误差
precision parts with very close tolerances
误差极微的精密零件
with a tolerance of less than three-thousandths of a millimetre
误差不超过千分之三毫米